/*
 * PropsTokenMarker.java - Java props/DOS INI token marker
 * Copyright (C) 1998, 1999 Slava Pestov
 *
 * You may use and modify this package for any purpose. Redistribution is
 * permitted, in both source and binary form, provided that this notice
 * remains intact in all source distributions of this package.
 */

package org.syntax.jedit.tokenmarker;

import javax.swing.text.Segment;

/**
 * Java properties/DOS INI token marker.
 * 
 * @author Slava Pestov
 * @version $Id: PropsTokenMarker.java,v 1.9 1999/12/13 03:40:30 sp Exp $
 */
public class PropsTokenMarker extends TokenMarker
{
    public static final byte VALUE = Token.INTERNAL_FIRST;

    public byte markTokensImpl(byte token, Segment line, int lineIndex)
    {
        char[] array = line.array;
        int offset = line.offset;
        int lastOffset = offset;
        int length = line.count + offset;
        loop: for (int i = offset; i < length; i++)
        {
            int i1 = (i + 1);

            switch (token)
            {
            case Token.NULL:
                switch (array[i])
                {
                case '#':
                case ';':
                    if (i == offset)
                    {
                        addToken(line.count, Token.COMMENT1);
                        lastOffset = length;
                        break loop;
                    }
                    break;
                case '[':
                    if (i == offset)
                    {
                        addToken(i - lastOffset, token);
                        token = Token.KEYWORD2;
                        lastOffset = i;
                    }
                    break;
                case '=':
                    addToken(i - lastOffset, Token.KEYWORD1);
                    token = VALUE;
                    lastOffset = i;
                    break;
                }
                break;
            case Token.KEYWORD2:
                if (array[i] == ']')
                {
                    addToken(i1 - lastOffset, token);
                    token = Token.NULL;
                    lastOffset = i1;
                }
                break;
            case VALUE:
                break;
            default:
                throw new InternalError("Invalid state: " + token);
            }
        }
        if (lastOffset != length)
            addToken(length - lastOffset, Token.NULL);
        return Token.NULL;
    }

    public boolean supportsMultilineTokens()
    {
        return false;
    }
}
